PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-12:27:40
G01     80.4           33.1                4.8 +/-    1.27       7.9 +/-    1.27  0.040 / 0.030
G07     132.2          38.1                5.2 +/-    1.04       7.8 +/-    1.04  0.040 / 0.040
G11     59.0           34.7                2.5 +/-    1.53       4.0 +/-    1.53  0.040 / 0.080
G13     284.3          37.9                5.3 +/-    1.46       8.0 +/-    1.46  0.060 / 0.080
G15     312.3          10.8               -7.4 +/-   15.83     -20.2 +/-   15.83  0.100 / 0.240
G17     221.7          63.6                8.7 +/-    1.40       9.6 +/-    1.40  0.090 / 0.260
G18     55.2           21.2                1.3 +/-    1.18       2.8 +/-    1.18  0.060 / 0.120
G19     218.9          30.9                4.5 +/-    1.38       7.7 +/-    1.38  0.080 / 0.110
G28     4.3            60.9                4.1 +/-    0.95       4.6 +/-    0.95  0.050 / 0.130
G30     123.5          71.4                5.1 +/-    0.51       5.4 +/-    0.51  0.060 / 0.130